Both new services will operate twice weekly from June as part of the airline’s summer 2019 schedule.
Welcoming the news Dublin Airport Managing Director Vincent Harrison said: “We are delighted to see Ryanair expand its route network further from Dublin Airport with the addition of Dubrovnik and Split to its summer schedule next year.
“These beautiful Croatian cities are full of culture and history and I have no doubt they will be hugely popular destinations. We will work closely with Ryanair’s management team to promote its new services.”
Ryanair will have 13 new services from Dublin Airport next summer to Bodrum, Bordeaux, Bournemouth, Caligari, Dubrovnik, Frankfurt, Gothenburg, Kyiv, London Southend, Lourdes, Luxembourg, Split and Thessaloniki.
Dublin Airport has welcomed almost 27 million passengers in the first 10 months of the year, a six per cent increase over the same period in 2017.
More than 1.6 million extra passengers have travelled through the airport between January and October. Dublin Airport has flights to almost 190 destinations in 43 countries, operated by 56 airlines.